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## Math and Science Tutor - Dan S.

### New York, NY (10027)

 Travel Radius 5 miles Hourly Fee \$40.00 Discount \$34.00 - \$38.00 Save up to 15%
 Background Check Passed 11/28/2012 Your first hour with any tutor is always 100% refundable!

# Dan's Responses in WyzAnt Answers

#### What is the difference between domain and range?

Describe a real life situation that could be modeled by a function

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Asked by Jamal from Oregon, OH
00

So if we're talking about a function graphed on the xy-plane

The domain: the set all of x values where the function is defined.

The range: the set of all the possible y values, or function values.

A real life example: the amount of atmospheric carbon dioxide over a long period time could be thought  of as an exponential function (very small amounts for a long period of time, bursting to very high amounts in a short amount of time).

#### 4(100^(2x+1)) + 5 = 4005

please show all steps used to solve for x. the answer is 0. Thanks

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Asked by Amanda from Merrimack, NH
00

1.  Subtract 5 from both sides.

2. Divide both sides by 4.

3. On the left side, express 100 as 10^2; on the right side express 1000 as 10^3.

4.  Equate the exponents for base 10, solve.

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## Background Check Status for Dan S.

Dan S. passed a background check on 11/28/2012. You may run an updated background check on Dan once you send an email.